diff --git a/services/reactor/fabric_link.go b/services/reactor/fabric_link.go
index 1a0d25f..abf70fe 100644
--- a/services/reactor/fabric_link.go
+++ b/services/reactor/fabric_link.go
@@ -13,6 +13,7 @@ import (
 
 const (
 	fabricUART            = "uart1"
+	fabricLogPrefix       = "[" + fabricUART + "] "
 	fabricStopWaitTimeout = 500 * time.Millisecond
 )
 
@@ -47,7 +48,7 @@ func (r *Reactor) startPassiveFabric(ctx context.Context, ev types.SerialSession
 	rx := shmring.Get(shmring.Handle(ev.RXHandle))
 	tx := shmring.Get(shmring.Handle(ev.TXHandle))
 	if rx == nil || tx == nil {
-		log.Println("[uart1] fabric session missing rings")
+		log.Println(fabricLogPrefix + "fabric session missing rings")
 		return
 	}
 
@@ -55,7 +56,7 @@ func (r *Reactor) startPassiveFabric(ctx context.Context, ev types.SerialSession
 	fabricConn := r.uiConn.NewChildConnection("fabric")
 	if fabricConn == nil {
 		_ = tr.Close()
-		log.Println("[uart1] fabric session missing bus")
+		log.Println(fabricLogPrefix + "fabric session missing bus")
 		return
 	}
 
@@ -68,7 +69,7 @@ func (r *Reactor) startPassiveFabric(ctx context.Context, ev types.SerialSession
 	r.fabricDone = done
 	r.fabricSessionOpen = true
 
-	log.Println("[uart1] fabric session opening node=mcu peer=bigbox-cm5 link=mcu-uart0 transfer=", transferMode)
+	log.Println(fabricLogPrefix+"fabric session opening node=mcu peer=bigbox-cm5 link=mcu-uart0 transfer=", transferMode)
 	go func() {
 		defer close(done)
 		defer tr.Close()
@@ -78,7 +79,7 @@ func (r *Reactor) startPassiveFabric(ctx context.Context, ev types.SerialSession
 		// to the updater-owned stage controller.
 		fabric.RunWithOptions(fabricCtx, tr, fabricConn, "mcu", "bigbox-cm5", fabric.DefaultLinkConfig(), fabric.RunOptions{Buffers: &fabricBuffers, StageController: stageController})
 	}()
-	log.Println("[uart1] fabric session opened node=mcu peer=bigbox-cm5 link=mcu-uart0 transfer=", transferMode)
+	log.Println(fabricLogPrefix+"fabric session opened node=mcu peer=bigbox-cm5 link=mcu-uart0 transfer=", transferMode)
 }
 
 func (r *Reactor) stopFabricLink() {
@@ -91,6 +92,6 @@ func (r *Reactor) stopFabricLink() {
 	r.fabricDone = nil
 	r.fabricSessionOpen = false
 	if !waitFabricDone(done, fabricStopWaitTimeout) {
-		log.Println("[uart1] fabric session stop timed out")
+		log.Println(fabricLogPrefix + "fabric session stop timed out")
 	}
 }
diff --git a/services/reactor/reactor.go b/services/reactor/reactor.go
index 7d9bdb1..357af86 100644
--- a/services/reactor/reactor.go
+++ b/services/reactor/reactor.go
@@ -515,12 +515,8 @@ func (r *Reactor) Run(ctx context.Context) {
 	stSub := r.uiConn.Subscribe(stTopic)
 	evSub := r.uiConn.Subscribe(evTopic)
 
-	// UART sessions. uart0 remains the original local JSON telemetry stream;
-	// uart1 is now reserved for the CM5 Fabric link. The logger still writes to
-	// the USB monitor, but no longer opens a competing uart1 log mirror.
-	const uartTele = "uart0"
-	subSessOpenTele := r.uiConn.Subscribe(tSessOpened(uartTele))
-	subSessClosedTele := r.uiConn.Subscribe(tSessClosed(uartTele))
+	// UART session for the CM5 Fabric link. The production hardware-update path
+	// keeps this UART Fabric-only; legacy JSON telemetry is not opened here.
 	var subSessOpenFabric *bus.Subscription
 	var subSessClosedFabric *bus.Subscription
 	if useHardwareFabricUART() {
@@ -529,13 +525,12 @@ func (r *Reactor) Run(ctx context.Context) {
 	}
 
 	// Kick open requests (fire-and-forget; events carry handles).
-	r.uiConn.Publish(r.uiConn.NewMessage(tSessOpen(uartTele), nil, false))
 	if useHardwareFabricUART() {
 		r.uiConn.Publish(r.uiConn.NewMessage(tSessOpen(fabricUART), nil, false))
 	}
 
 	// Retry back-off guards.
-	var retryTeleAt, retryFabricAt time.Time
+	var retryFabricAt time.Time
 
 	// Supervisory ticker
 	ticker := time.NewTicker(TICK)
@@ -546,26 +541,13 @@ func (r *Reactor) Run(ctx context.Context) {
 	for {
 		select {
 		// ---- UART session opened/closed ----
-		case m := <-subSessOpenTele.Channel():
-			if ev, ok := m.Payload.(types.SerialSessionOpened); ok {
-				r.jsonOut = shmring.Get(shmring.Handle(ev.TXHandle))
-				log.Println("[uart0] telemetry session opened")
-			}
 		case m := <-subscriptionChannel(subSessOpenFabric):
 			if ev, ok := m.Payload.(types.SerialSessionOpened); ok {
 				r.startPassiveFabric(ctx, ev)
 			}
-		case <-subSessClosedTele.Channel():
-			r.jsonOut = nil
-			log.Println("[uart0] telemetry session closed")
-			// Auto-reopen with back-off
-			if time.Now().After(retryTeleAt) {
-				r.uiConn.Publish(r.uiConn.NewMessage(tSessOpen(uartTele), nil, false))
-				retryTeleAt = time.Now().Add(2 * time.Second)
-			}
 		case <-subscriptionChannel(subSessClosedFabric):
 			r.stopFabricLink()
-			log.Println("[uart1] fabric session closed")
+			log.Println(fabricLogPrefix + "fabric session closed")
 			// Auto-reopen with back-off
 			if time.Now().After(retryFabricAt) {
 				r.uiConn.Publish(r.uiConn.NewMessage(tSessOpen(fabricUART), nil, false))